Hello,

I just finished my 2nd Skunkie moded Riesong A 10/ A12. It has been so satisfying to tinker and hear the improvements in sound.

On this 2nd one, when I turn it on the amp plays marginally loud, then gets quieter until the maximum volume is just a whisper. The volume knob does affect the volume.

I've swapped tubes, still quiet. re-flowed most of the solder joints. Voltage at B1 is around 300v.

Any thoughts on where to look?

Much appreciated

I built and enjoy Skunkie’s EL34 amp earlier in the year.

I had been using JJ EL34L tubes in another amp prior to using them in the Skunie amp. I have noticed noisy tubes on amp power up. I didn’t think much of it until recently I started hearing some distortion. Swapping the tubes in the amp, the issue followed the tube.

I was going to order another set of JJs but wanted to see what tubes others are running or prefer.

To be clear, the amp did not cause this problem, I have had the tubes for a while. I’ve also been known to leave amps running overnight. By accident of course.

The JJs are a good value so likely I’ll get another set regardless.

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